Device for inserting and adjusting bearings for staffs, spindles, and the like



I. I.. AXEN. DEVICE FOR INSERTING AND ADIUSTING BEARINGS FOR STAFFS, SPINDLE S, AND THE LIKE. APPLICATION F|LED JUNE 12.. 1919.

J. L. AXEN. DEVICE FOR INSERTING AND ADJUSTING BEARINGS FOR STAFFS ,sP|NDLEs, AND THE LIKE. APPLICATION FILED JUNE l2, 1919.

Patented J une 8, 1920.

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Witwen@ UNITED STATES PATENT OFFICE.

JOHN L. AXEN, OF DETROIT, MICHIGAN, ASSIGNOR TO NATIONAL GAUGE & EQUIP- MENT COMPANY, OF LA GROSSE, WISCONSIN, A CORPORATION OF WISCONSIN.

nEvrcE ron INSERTING AND AEJUsTrNG BEARINGS Eon srAEEs, srnvDLEs, AND' l THE LIKE.

Specification of Letters Patent.

Patented June 8, 1920.

Application filed .Tune 12, 1919. Serial No. 303,783.

To all whom t may concern.'

Be it known that I, JOHN Il. AXEN, a citizen of theI United States, residing at Detroit, in the county of IVayne and State of Michigan, have invented certain new and useful Improvements in Devices for Inserting and Adjusting Bearings for Staffs, Spindles, and the like, of which the following is a specification.

My invention relates to improvements in devices for inserting and adjusting bearings for staffs, spindles, and the like, it more particularly relating to a device for inserting and adjusting the bearing for the spindle of an electrical measuring instrument.

The obj ect of my invention is to provide a device of the character referred to which will be simple and effective in its construction and operation.

A further object of my invention is t0 provide an improved attachment for the terminals of the coil.

Further objects of the invention will appear from the drawings and the following description.

In the accompanying drawings Figure l is a sectional view of an instrument embodying my improvements, the section being on the line 1-1 of Fig. 2.

Fig. 2 is a front elevation, with the dial, its glass cover and retaining cap for the same removed.

Fig. 3 is an enlarged view of a portion of the base member of the casing as shown in Fig. l, together with a portion of the pointer staff and the lowerV bearing for same.

Fig. 4 is a view similar to Fig. 3 with the pointer staff and its bearing removed.

Fig. 5 is a detail section of one of the terminals of the coil together with the attaching devices for the same.

Fig. 6 is a plan of the against which the clamped.

Fig. 7 is a detail of one of the ends or terminals of the coil.

Fi 8 is an enlarged section of the bearing or the lower end of the indicator staff.

Fig. 9 is a view of the bearing adjusting tool. Y

Fig. 10 is a side view of the holder for the instrument and the tool while the bearing is being adjusted.

insulating strip coil terminals are Fig. l1 is an end view of the same.

Fig. 12 is a section on the line 12-12 of Fig. l0, the operating parts on the instrument base being omitted.

Referring to the drawings, the general arrangement and construction of the parts is the same as described in my former patent referred to. A casing is provided consisting of a cylindrical side wall 10, a base portion 13 preferably of soft metal having a flange 14, the casing being secured to the flange by screws l5. The inner edge of the casing has a flange 1l, the opening in the upper end of the casing being closed by a clasp l2. An indicating pointer staff I6 has its upper end journaled in a bearing '17 carried at the end of a finger 18a integrally formed with and projecting centrally from a bar I8, which bar is secured by screws 19 to posts 2O which are integrally formed with the base 13. The stafl has secured thereto as at 25 a needle or pointer 24 which projects through the arcuate opening 26 of the dial 21, which dial is secured by the screws 22 to wings on the respective ends of the cross-bar 18. The lower end of the pointer staff is carried by a bearing to be hereinafter described, the peculiar construction and arrangement of which forms one of the features of my invention. The staff has attached thereto fan blades 33, each of which is located in a fan-shaped chamber 30 closed at the top by a removable cover 3l secured in position by the screws 32; the shape of each chamber being similar to the single chamber illustrated in my former patent referred to, with the staif extending between the adjoining apeXes of the chambers.

Connected to the staff is an elongated armature 34 of magnetic material which is infiuenced by a current carrying coil consisting of a flat strip of metal indicated in general by the numeral 35. The coil terminals 38 and 39 are secured to the posts 36 and 37 in a manner to be hereinafter described and the method of securing the terminals in position forms another feature of my invention. The flat strip of metal comprising the coil extends about the armature in the manner described in my former patent, the coil consisting of three layers which are formed with alined perforations as indicated at 35 to permit the passage therethrough of the staff 16.

A permanent magnet 47 is bent on an arc to conform to the curvature of the periphery of the base and is secured at its opposite end by screws 48 upon posts 49 preferably formed integral with the bottom wall of the base; the magnet being mounted at the side of the base opposite to the armature 34-and 5 coil 35. From the poles of the magnet there are extended thin strips 47a of cast iron or similar permeable material of low magnetic retentiveness, their ends being connected directly to the magnet 47 by meansl of the magnet mounting screws 48. These strips extend from the poles of the magnet upwardly and away from the poles into a plane a short distance above the upper course 33 of the coil; the eXtreme ends of the strips 47a being bent inwardly toward the shaft so as to lie above the .armature 34 at opposite sides of the staff; the purpose of this arrangementbeing explained in my prior patent referred to.

tight fit therein, the bearingbeing also inagainst whichtheV base rests.

serted from the inside of the base. VAfter the operating parts have been assembled upon the base, the base is placed in an opening 60a in a block 60, the walls of the opening being provided with a shoulder 63 The block is mounted upon a supporting base portion 61 and has at one side thereof a projecting boss 62 and at the opposite side thereof with aprojection 68 having an open ended slot 68"'. Hinged to the boss 62 by the pivotscrew 65 is a bar 64, one or more washers 66being inserted between the bar and the head of the screw to give the propel' lateral adjustment. The bar is provided with a threaded opening 64a to receive the threaded portion 57 of a tool 58 having at its extreme end a reduced portion 59. When the bar 64 isswung to the position shown in the drawings with its free end resting in the slotted Aportion of the projection 68, this reduced portion 59 will be brought in line with the bearing 5() soV that by turning the tool in the threaded openingof the bar so that the reducedy portion 58 will bear against the bearing 50, the bearing can be adjusted to the proper degree. The walls of the opening 60a beyond thel shoulder are formed with two re-v cesses 7 0 to accommodate the posts 20, which also prevent the base 13 from turning. This operation also serves to press in against the bearing the bur`s about the edge of the opening which have resulted from the punching operation, as indicated in Fig, 3. llhis arrangement furnishes a means for unparting a very fine adjustment to the bearing, the fit of the bearingin the openlng in the base being sufliciently tight to hold the bearing in its adjusted position.

It is necessary that the terminals or ends of the coil be so secured as to maintain the coil in its properly adjusted position and the manner-'of accomplishing this is another feature of my invention. Each end ofthe coil is punched or bent to form a rib 54a on its under surface, which ribs, when the coil is in position, coincide with recesses 54 on the upper surface of a strip vof insulating material 55 which Vextends acrossY the base from one coil terminal to the other. 'By this arrangement, it will be seen that when the coil terminals are firmly clamped in position against the insulating strip by the nuts 56on the postsl86 and 37the engagement of the V.ribs with the recesses will hold the coil terminals firmly in position andv prevent any change in the properly adjusted position of the coil with respect to the armature or other parts.

In assembling the parts, the fanblades 33 are placed withinV the chambers, the coil secured in position in the manner described,

the staff then inserted through the alined I apertures of the coil and throughthe curled ends of the fan blades with a tight fit so as to frictionally bind the fans to the staff. The armature 34 and pointer 24 are secured Vto the staff before the same is secured to the fan, the opening in the upper layer of the coil being elongated as shown to permit the passage vtherethrough of the elongated or diamond-shaped armature. AThe bar carrying the bearing 17 is-then secured in position with the respective ends of the staffI located in that bearing and also inthe base bearing, after which the baseV bearing is adjusted in the manner before described.

Having thus described `my invention, I A

claim Y Y 1. In an apparatus for adjusting a bearing of the character described, a support to hold the bearing carrying member, a tool support, apivotalconnection between said tool support and said rst mentioned support, said tool support having a threaded opening in line with said bearing when ysaid tool Vsupport is in its operative position, and a tool having a threaded engagement with said opening so that its `end may be caused to engage and adjust the bearing.

v 2. In-an apparatus for adjusting a bearing, a support for a bearing Vcarrying member, a'bar hingedtoone side ofnsaid support, a projecting portion having a slotted opening at the opposite side ofsaid support, said bar having -a threaded opening arranged to be brought inline-with the bearing When said bar is in position in said slotted opening, and a tool threaded in said opening so that when said tool is turned its end is caused to abut and adjust the bearing.

3. In an apparatus of the character described, a main support having a circular opening the Walls of which are provided with a shoulder, said opening being arranged to receive a circular bearing carrying member, a bar pivotally connected to said support at one side thereof, a seat for said bar on the opposite side of said support, said bar having a threaded opening in line with the bearing when positioned on its seat, and a tool having a threaded engagement with said last-named opening arranged to abut and adjust the bearing.

4. In an apparatus of the character described, a main support having a circular opening with the Walls of said opening provided With a shoulder to receive a circular bearing carrying member, the Walls of said opening also having recesses to receive projecting parts in said member, a bar pivotally connected to one side of said support, a seat for the free end of said bar on the opposite side of said support approached by a slotted opening, said bar having a threaded opening in line with the bearing when in its seated position7 and a tool threaded in said last-named opening, for the purpose specified.

5. In an apparatus of the character described, a support for a bearing carrying member, said support having a circular opening. to receive said member, the Walls or which are provided with a shoulder to form an abutment for said member', a tool support associated with said rst-mentioned support, said tool support having a threaded opening, and a tool threaded in said threaded opening for engagement with said bearing, for the purpose specified.

In testimony whereof, I have hereunto set my hand this 26th day of May, 1919.

JOHN L. AXEN. Witness:

CHAs. I. IVELCH. 

